As [img=71x19]1803e23556504c2.png[/img], the function [img=104x25]1803e2356097b36.png[/img] is（ ）.
A: an infinity
B: an infinitesimal
C: an unbounded function
D: a bounded function
A: an infinity
B: an infinitesimal
C: an unbounded function
D: a bounded function
举一反三
- The function [img=164x43]1803e256fccc749.png[/img] is a （ ）. A: bounded function B: periodic function C: even function D: odd function
- 在环形区域[img=136x26]18030733be53638.png[/img]上， 绘制函数图形[img=129x27]18030733c6c9cd6.png[/img] A: Plot3D[x^2+y^2,{x,-2,2},{y,-2,2},Exclusions→Function[{x,y},0.5<x^2+y^2<2]] B: Plot3D[x^2+y^2,{x,-2,2},{y,-2,2},RegionFunction→Function[{x,y},0.5<x^2+y^2<2]] C: Plot3D[x^2+y^2,{x,-2,2},{y,-2,2},RegionFunction→Function[{x,y},2>x^2+y^2>0.5]] D: Plot3D[x^2+y^2,{y,-2,2},{x,-2,2},Exclusions→Function[{x,y},0.5<x^2+y^2<2]]
- As [img=48x18]1803e2356a134b3.png[/img], the function [img=144x25]1803e235733dafc.png[/img] is （ ）. A: an equivalent infinitesimal with [img=11x14]1803e2357bc16bb.png[/img]. B: an infinitesimal of same order but not equivalent with [img=11x14]1803e2357bc16bb.png[/img]. C: an infinitesimal of higher order than [img=11x14]1803e2357bc16bb.png[/img]. D: an infinitesimal of lower order than [img=11x14]1803e2357bc16bb.png[/img].
- The function [img=170x29]1803e256de424b0.png[/img] is a composition function of [img=115x28]1803e256e701aae.png[/img] and [img=83x24]1803e256ef4fec1.png[/img].
- If the function [img=34x25]17de81deae56b45.png[/img] is a monotonically increasing continuous function, then [img=201x51]17de81deba1b3ad.png[/img].